www.nic.cz DNSBL Blacklist Check, WHOIS & DNS Records

Performance Lighthouse

Desktop

Mobile

Web Vitals Metrics

FCP (First Contentful Paint):

D: -- M: --

LCP (Largest Contentful Paint):

D: -- M: --

TBT (Total Blocking Time):

D: -- M: --

CLS (Cumulative Layout Shift):

D: -- M: --

TTI ( Time to Interactive):

D: -- M: --

Speed Index:

D: -- M: --

Generating Screenshot

www.nic.cz

Server Footprint

Target Address: www.nic.cz

Server IPv4: 217.31.205.50

BGP Autonomous System (ASN): AS25192 (CZNIC-AS - CZ.NIC, z.s.p.o., CZ) [CZ]

HTTP Service Speed: Scanning...

WHOIS registry

For WHOIS details, please check the parent domain: nic.cz

Registrar: REG-CZNIC

Created At: 30.10.1997 01:00

Last Updated: 17.11.2020 14:25

Expires At: 15.03.2027

Remaining Time: 231 Days

SSL Certificate Scanning...

Issuer: --

Certificate Expiry: --

SSL Days Remaining: --

Security & SEO Health

Other Domain Extensions (TLD)

Scanning extensions...

Name Servers (NS)

Record Type: NS

3 Records

For NameServer details, please check the parent domain: nic.cz

Target	IP Address	ASN
Target b.ns.nic.cz	IP Address IPv4 194.0.13.1 IPv6 2001:678:10::1	ASN AS25192 (CZNIC-AS - CZ.NIC, z.s.p.o., CZ) [CZ] AS25192 (CZNIC-AS - CZ.NIC, z.s.p.o., CZ) [CZ]
Target a.ns.nic.cz	IP Address IPv4 194.0.12.1 IPv6 2001:678:f::1	ASN AS25192 200070 [CZ] AS200070 25192 [CZ]
Target d.ns.nic.cz	IP Address IPv4 193.29.206.1 IPv6 2001:678:1::1	ASN AS25192 200070 [CZ] AS200070 25192 [CZ]

DNS Resolution Roadmap

Subdomain detected: www.nic.cz. Checking parent domain nic.cz for NameServer information.

Resolution started: querying NS (Name Server) records for nic.cz.

Step 1: Querying local DNS resolver...

Success! Authorized NS records retrieved from local DNS resolver.

IP Addresses (A) (IPv4)

Record Type: A

1 Records

IP address	ISP / BGP Network (ASN)
IP address 217.31.205.50	BGP Network (ASN) AS25192 (CZNIC-AS - CZ.NIC, z.s.p.o., CZ) [CZ]

IP Addresses (AAAA) (IPv6)

Record Type: AAAA

1 Records

IP address	ISP / BGP Network (ASN)
IP address 2001:1488:0:3::2	BGP Network (ASN) AS25192 (CZNIC-AS - CZ.NIC, z.s.p.o., CZ) [CZ]

Mail Servers (MX)

Record Type: MX

0 Records

No records found.

Text Records (TXT)

Record Type: TXT

0 Records

No records found.

Alias Records (CNAME)

Record Type: CNAME

0 Records

No records found.

Start of Authority (SOA)

Record Type: SOA

0 Records

No records found.

Original WHOIS Record Output

%  (c) 2006-2021 CZ.NIC, z.s.p.o.
% 
% Intended use of supplied data and information
% 
% Data contained in the domain name register, as well as information
% supplied through public information services of CZ.NIC association,
% are appointed only for purposes connected with Internet network
% administration and operation, or for the purpose of legal or other
% similar proceedings, in process as regards a matter connected
% particularly with holding and using a concrete domain name.
% 
% Full text available at:
% http://www.nic.cz/page/306/intended-use-of-supplied-data-and-information/
% 
% See also a search service at http://www.nic.cz/whois/
% 
% 
% Whoisd Server Version: 3.15.0
% Timestamp: Mon Jul 27 23:33:22 2026

domain:       nic.cz
registrant:   CZ-NIC
admin-c:      FEELA
admin-c:      MAPET
nsset:        CZ.NIC
keyset:       AUTO-ZHHWRIDCGH9F46ZDG2K2VC284
registrar:    REG-CZNIC
status:       Sponsoring registrar change forbidden
registered:   30.10.1997 01:00:00
changed:      17.11.2020 14:25:52
expire:       15.03.2027

contact:      CZ-NIC
org:          CZ.NIC, z.s.p.o.
name:         CZ.NIC, z.s.p.o.
address:      Milesovska 1136/5
address:      Praha 3
address:      130 00
address:      CZ
registrar:    REG-CZNIC
created:      17.10.2008 12:08:21
changed:      15.05.2018 21:32:00

contact:      FEELA
name:         Ondřej Filip
registrar:    REG-MOJEID
created:      04.01.2005 13:35:00
changed:      06.12.2025 15:00:04

contact:      MAPET
name:         Martin Peterka
registrar:    REG-MOJEID
created:      06.03.2002 18:11:00
changed:      07.04.2025 16:33:55

nsset:        CZ.NIC
nserver:      d.ns.nic.cz (193.29.206.1, 2001:678:1::1)
nserver:      a.ns.nic.cz (194.0.12.1, 2001:678:f::1)
nserver:      b.ns.nic.cz (194.0.13.1, 2001:678:10::1)
tech-c:       JTALIR
registrar:    REG-CZNIC
created:      09.06.2008 14:30:16
changed:      11.12.2024 12:23:18

contact:      JTALIR
name:         Jaromír Talíř
registrar:    REG-MOJEID
created:      26.10.2010 10:53:34
changed:      22.01.2025 18:56:06

keyset:       AUTO-ZHHWRIDCGH9F46ZDG2K2VC284
dnskey:       257 3 13 k7hKKwT81lAZq/ll8elwYcxYLsWBaWUIQyeS7E0ENiszjlujM7JouKGZZPnchh/dJ8+pJaRT6XTd7zoTn+Uh6A==
tech-c:       CZNIC-AKM
registrar:    REG-CZNIC
created:      17.11.2020 14:25:52
changed:      27.06.2026 22:11:56

contact:      CZNIC-AKM
org:          CZ.NIC, z.s.p.o.
name:         CZ.NIC, z.s.p.o.
address:      Milesovska 1136/5
address:      Praha 3
address:      13000
address:      CZ
registrar:    REG-CZNIC
created:      12.08.2024 15:02:38

DNS Blacklist (DNSBL) Scan Report

Scanning...

The server's IPv4 address (217.31.205.50) is being scanned across global email spam, malware, and botnet networks.

Blacklist Server	Description	Result	Response Code	Details
Scanning blacklist servers, please wait...

Analyzing...

Performance Lighthouse

Server Footprint

WHOIS registry

SSL Certificate Scanning...

Security & SEO Health

Other Domain Extensions (TLD)

Name Servers (NS)

IP Addresses (A) (IPv4)

IP Addresses (AAAA) (IPv6)

Mail Servers (MX)

Text Records (TXT)

Alias Records (CNAME)

Start of Authority (SOA)

Original WHOIS Record Output

DNS Blacklist (DNSBL) Scan Report

SSL/TLS Certificate Chain Details

Subject Alternative Names (SANs)

Live Network Access Test Panel

Ping Analysis

Traceroute (Network Path)

Websites on the Same Server